疲惫不是身体的罢工，而是心理能量的收支失衡。

我不相信幸福的结局，我相信必要的结局。

Society can and does execute its own mandates， and if it issues wrong mandates instead of right， or any mandates at all in things with which it ought not to meddle， it practices a social tyranny more formidable than many kinds of political oppression， since， though not usually upheld by such extreme penalties， it leaves fewer means of escape， penetrating much more deeply into the details of life， and enslaving the soul itself.

未来属于敢于梦想的人。

我为我们没有做的许多事情感到骄傲，就像为我们做过的事情感到骄傲一样。创新就是对一千件事情说不。

最好的肥料是农民在田间的身影。